What are some common methods for reading specific lines from a text file in PHP?

When working with text files in PHP, you may need to read specific lines from the file. One common method to achieve this is by using a loop to read each line of the file until you reach the desired line. Another method is to use the `file()` function to read all lines into an array and then access the specific line by its index. Additionally, you can use the `fgets()` function to read a specific line by specifying the line number. 

// Method 1: Using a loop to read specific line
$lineNumber = 3;
$filename = 'file.txt';
$handle = fopen($filename, 'r');
$currentLine = 0;

while (!feof($handle) && $currentLine < $lineNumber) {
    $currentLine++;
    $line = fgets($handle);
}

echo $line;
fclose($handle);

// Method 2: Using file() function
$lines = file($filename);
echo $lines[$lineNumber - 1];

// Method 3: Using fgets() function
$handle = fopen($filename, 'r');
for ($i = 1; $i < $lineNumber; $i++) {
    fgets($handle);
}
echo fgets($handle);
fclose($handle);

Keywords

file handling file pointer fgets file() readline

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